Attachment plug receptacle



Jan. 1, 1935. K w c 1,986,652

ATTACHMENT PLUG RECEPTACLE 4'0 T v fi zve7v o7f 2 Haw; W

l/ W064i Patented is. 1,1935

KQWack l Q'eQBiedfoI'G,assignor tof fJohnjI. Paulding, Inc.,fNew Bedford,.Mass al 1 corporation iof Massachusetts 1' This invention relatesto 'a attachmentpl ig receptacle. i an One of the important objects 7 of theflinvention' is" the provisionof a receptacleof thefabove char? acterl having. av simplicity of construction facilitates and expeditesIthe' lira,

se nbling of: the 'various parts and *tliereby"eifcts; amaterial saving in the costofproductions"" Another objectof the inventionfis the pfo- I vision of an insulating body andtcontacts so formed that thecontacts may; in the assembling process, be pushed edge-wise into aa suitable recess in the insulating-body and intrlhckedlto the said body when tin iifial' p sit requiring other fastening mean thout A further object is theprovisionof aconstruc tion. which permits the lead was terminals ito be connected to the'contacts on thesides or the v Other objectsof the invention Will -be? receptacle thereby facilitating. this o eiaeen when the receptacleis behig niounte'd in an let box and connected upfto a wiring syste In its preferred"formymy invention'fcenteiifi plates a receptacle made up "of; an insulating; body recessed from its bottornside to; form. lcontact chamber and contact fplates mouhtdiir said chamber from the bottom of said insulatingbodw the said insulating body and the contactfplates having interlocking portions adapted'for hold ing the contact plates locked to the insulating body. when in operative position: Preferably,

this'isflaccomplished by providingplate con acts.

adapted'to be inserted edgewise into the in u-; lating body in planes" parallel withfthesides' thereefgfeach contact plate havingfafportiori adapted to lock over a shoulder formed c ms side or the insulating bodyl Midway 'eachsifdef the receptacle is preferably cutfawa'y to exposethe contact plate and oneorniore binding" screws m manta fexe e ma lead wires rrlay" eflattached atthe side of the:

V receptacle.

' This construction has a nurnberof advantages;

It eonduces to simplicity; of. construction by re';

duc'ing the number of parts eliminates all nee cessity for? providing fastenin g means such as screws and the like 'for retaining t'hel contactj plates in proper; position within th'e rec acla and it reduces the time and; labor necessa theassembling process. H Iri'the accompanying drawing, showing one form of the invention for the purpose ofiillustrating the principle thereof, Figure 1 is atop plan view of one formof receptacle constructed 3 Apsucasnocwm, 1932. serial No. 37.236

(ciJrrsL9330i; 5W5

ini accoridancewithmyinvention; Fig. 2" is a vertical longitudinaP'SectionaI 'view thereof on line 2-2 in Fig. 1; Fig.3 is a side elevation of the receptacle; Figg l is a bottom plan view; Fig. S is'abottom plan view of; the receptacle tha yoke anfd bottom insulating plate removed and showing one; contact plate in position; Ffigrfiis a vertical cross-sectional'view on line 6 fiyin Fig. 1; Fig. 7 is a similar cross 'cuopgrview on line 7-7 in Fig. 1; Fig. 8 is side elevation of a contact'plate and Fig. 9 is an end elevation of the. same;

1' "Referring to the drawing showing the inven it tiorrembodied iniareceptacle of the duplex type,

ISdesignates a one+piece insulating body of any suitabledorm but preferably rectangular proyidedonits upperfac'e with a pair of enlarged.

projecting bosses "l6 adapted to fitopenings the ordinaryface plate; In its bottom face, the

"insulating body is recessed to form a chamber,

zc' which opens outleach side of the insulating body at 22. Mounted the chamber 20 are two contact K131765525; each comprising preferably an elongatedibodyportion having each end partiallyseparatcd from 'the body portion to form a'tonguejthe free endof whichis' bentoutwardlyintooffset relaltionwith'the bodyjportion to serve as a spring contact blade 26. Each'contact plate amount edgewisein the chamber 20 adjacent the innerface of one side wall of the insulating body so that the spring contact blades f project inwardly toward the longitudinal center of the chamber and in position to be engaged hythefblades of a jack plug inserted through jack bladeslots 28 which are arrangedfin pairs in 'thebosses 16 and, open intothe chamber 20. At each end of the chamber is; formed integral with theinsulating body, an abutment 30, T- shaped in" plan (Fig; 5;) against which the free ends of the contact-blades 26 impinge and which .tend to hold those' blades inplace and to act as guides" for the jack plug blades when I inserted. 1 Thej central portion of each contact plate'jis exposed by the side opening-22 and inthis exposedpcrtionare mountedf bindingscrews 32 forthe purpose of attaching lead wires or con-1 ductors tothe contact plates. Preferably; the

plate is stamped ontof sheet metal in which case} it is too thin-to permittheholes 34 in which "the-"binding screws are mounted to be threaded. To obviate-this *difiiculty. the centralportionof each-contact plate is backedupby a rectangular nut 36 havingthreaded holes to receive the ends of the binding screws which are mounted loosely inthe holes 34 in the contact plate. To prevent tact plate, which post may be molded integral with the insulating body. The contact plates are I therefore held against lateral movement between the posts and the side walls of the insulating body.

In order to lock the contact plates within the insulating body, each of the plates is provided into the insulating body, tosnap over and lock on a shoulder 42 (Fig. 6) formed on the; side; of

the insulating body abovethe'opening 22. Below this shoulder the side of the insulating body'may be bevelled so that when the contact "plate is inserted edgewise into the insulating body, the

ing the plate in permanent position without requiringany other fastening means. I I I For supporting the insulating body. inasuitable receptaclasuch as an outlet -box, ayoke 44 i's'fastened to the bottom face of theinsulating body longitudinally thereof by a pair of screws lfi'mounted loosely in an elongatedslot 48 (Fig. in an elliptical post or partition 50 integral with the insulating body. The upper ends ofthe screws are threaded into a small rectangular plate5'2' mounted in a suitable recess formed in the upper face of the insulating bodybetween the two bosses 16, which plate may be. provided with a central threaded hole 54 for receiving a fastening the yoke in an outletbox.

. 'It will be observed that a receptacle constructed in accordance with my invention is of very simple construction comprising a minimum number of parts, all of which may be assembled rapidly requiring the manipulation of one screw only. 1 In assembling the receptacle, the contact plateswith the nuts and binding screws arcinserted edg'ewise in the bottom of the receptacle and pushed inwardly untilthe portion 40 on eachcontact, plate rides over its respective shoulder 42 and snaps into-place thereby locking each con tact plate inoperative position. The insulating sheet 56 and yoke are then adjusted in position sides thereof, a position which facilitates the in; I stallation of the receptacle in an outlet box and its. connection to the wires of the circuit. The

contact plate is of extremely simple construction and can be stamped outof ribbonmetal in one operation-and the locking of those membersin theinsulating body does not require anyv screws or other fastening means but is accomplished by merely pushing thecontacts into operative-posh tion- It isto be understood that my invention is not to be limited to the construction hereinbefore shown and described since it may be embodied in various other forms all within the scope of the following claims.

What I claim is:

' 1. In a device of the character described, an insulating body recessed in its bottom face to form a chamber, said chamber opening out each side of said body and said body having an outer shoulder oneach side adjacent saidside opening, a pair ofjack blade slots in the upper face of said body at each end thereof and opening into said chamber, an abutment'formed in said chamber at each "end" thereof, said abutment having oppositely faced-portions. serving as guides for jack blades inserted in said'slot's and a pair of contact plates i'nountededgewise in said chamber, each of said .plates having a flange overlapping one of said edge, of the portion 40 will ride up on the bevelled portion and snap over the shoulder thereby lock shoulders for locking said contact plate within said chamben and each of said plates being provided with an offset spring contact blade at each end,;each of said blades being normally in engagement with an oppositely faced portion of said abutments, to hold said contact plate against la ralyrnqvement in saidchamber.

2.11m afdevice of thecharacter described, an insulating body recessed in its bottom face to form a chamber said chamber opening out each side of said ,body and said body: having an outer shoulder on each side adjacent said side opening, a pair; of jack blade slots'in the upper face of saicLbody at each end thereof andopening into said chamber, 7 an abutment formed in said chamber at each end thereof, said abutment having oppositely faced portions serving asguides for jack blades inserted in said slots, and a pair ofcontactplates mountededgewise in said chamber each. of said plates engaging the inner face of; ,a side wall of saidbody and having a flange overlapping one of said shoulders for locking said contact plate within said chamber, and each of said plates being provided with an offset spring contact blade at each end, each of said blades being normally in engagement with an oppositely faced portion of said abutments to hold said contact plate against lateral movement in said cham- 1 'i a y f v.

3. Irifa device ,of the character described, an insulating bodyrecessed in its bottom face to form, a chamber, said chamber opening out eachside-of said body and said body having an outer shoulder on each side adjacent said side opening, a post'formed in said chamber adjacent each side opening, a pair of jack blade slots in the upperface of said bodyat each end thereof and opening intojsaid chamber, an abutment formed in said chamber at each end thereof, said abutment having oppositely faced portionsserving as guides for jack blades inserted in said slots, and a pair of elongated contact plates mounted each edgewise in said chamber between aside wall and one of said posts, each of said plates having a central flange overlapping one of said shoulders for. locking said contact plate within said chamher, and each of'saidplate's being provided with an ofiset spring contact blade at each end, each of said bladesbeing' normally inengagement with 

